Electric switch.



M. GUETT. .ELECTRIC SWITCH. APPLICATION FILED FEB. 25, 191 1 Patented J1m 1,1915.

lommm LVVE/VTOR.

By WM w A 7701mm.

on rnn srarns MONROE G'UETT, OF HARTFORD,

MANUFACTURING COMPANY, OF CONNECTICUT.

CONNECTICUT, ASSIGNOIR Prll lttl illl (1 Bil no near & HEGEMAN HARTFORD, GONNECTTCUT, A CORPORATION 0i ELECTRIC S'WETCH.

Specification of Letters 'Eatent.

Patented nine 11., 1915.

Application filed February 25, will. fierial 1%. 610,823.

To all whom it may concern Be it known that l. Monnon GUETT,21 citizen of the United States, and a resident of. Hartford, in the county of Hartford,

State of Connecticut, have invented certain new and useful Improvements in Electric Switches, of which the following is a speci- 'to provide a switch having a slow closing movement and-a quick break.

- The invention is illustrated in the drawings in: whichv Figure -1.,is a plan view of the switch. Fig. 2 is a. side'elevation thereof. Fig. 3 is a detail plan view of the stop plate and part of the'movable pole element.

Referring to the drawings a denotes the base of the switch, 6 the spindle carried by the shaft 0 and rotatably' supported in the base. l

d d are the stationary contacts.

6 denotes in general the rotary pole element which includes the switch plate f, the ends of which are split so as to receive and frictionally engage the stationary contacts 25, (Z, the switch plate being suitably insulated in any well known wav. 'The rotary pole element carries a depending stop lug g forengagement with the stop plate It mounted on and adapted to move with the spindle. The spring 2' connects the rotary pole element with the spindle. As will be seen from Figs. 1 and 3 the stop plate h, which forms'part of the rotary pole element, has a cut away portion providing a fiat stop face 7: and an engaging shoulder Z. Any suitable handle or'device can be connected to the shaft 0 for the purpose of turning the spindle. The end 10 ofthe '1 spring 2' is securedto the spindle, the oppo- .site end of-the spring lying back-of a pin 2 carried by the. rotary pole element. The strength of this spring is calculated so that it can be wound up by the rotation of the spindle Without overcoming the frictional engagement between the spindle and the, stationary contacts. As illustrated in Fig.

1 the switch plate 6 is in engagement with the stationary contacts d d, and the stop lug g rests against the stop face 70 of the stop plate It. If now the spindle be turned the frictional engagement of the switch plate with the stationary contacts is suflicient to hold the switch plate against movement. It will be seen that the spindle and the stop plate carried thereby can rotate slightly before the stop shoulder Z engages the stop lug During this initial rotation of the spindle and stop plate power is stored up in the. spring. Upon further rotation of the spindle the stop plate forces the rotating pole element around until the switch plate is disengaged from the stationary contacts, whenthe spring throws the rotating pole element with a snap action causmg a quick, sharp break of'the circuit. To

close the circuit the spindle is turned in the opposite direction and the pole element moves with it, and accomplishes a slow closing 0 circuit.

There are many uses for which a switch of this character is particularly suitable and it is apparent that the device as illustrated is susceptible of some modification and alteration without departing from the spirit and scope of the invention.

I claim as my invention:

.1. In an electric switch the combination with av base, stationary contacts thereon, an oscillating spindle and an oscillating pole element loosely mounted on the spindle and including a switch plate coiiperating with said stationarycontacts. of means for holding said switch plate to permit relative rotary movcment'of the spindle, means for subsequently moving the spindle and switch plate together, a spring for moving said switch plate relatively to said spindle and a stop to limit the throw of the switch plate by the spring, all of said motions being in one direction to accomplish the breaking of thecircuit, and means formoving said pole element and spindle together in the opposite direction.

2. In an electric switch the combination with a base, stationary contacts thereon, an oscillating spindle. an oscillating pole element loosely mounted on the spindle and including a switch plate adapted for coopera tion with said stationaryconta'cts, and aspring connecting said pole element and spindle, of a stop plate'carried by the spin dle and provided with two spaced shoulders, a stop lug -carriedbythe pole'element and pro ecting between the shoulders and the stop plate, one of the shoulders on the stop plate being adapted to engage said stop lug I ment with said stationary contacts, a spring to move said pole element andspindle together in one direction to cause the fric-' tional engagement of the switch plate; and stationary contact, said switch plate being frictionally held during the initial movement of the spindle and its attached stop plate. in the opposite direction, the other shoulder-0f said stop plate then engaging the stop lug to move said switch plat'e'outof engagement with the stationary contacts,

.the spring which was made tense during the initial movement of the spindle finally moving said switch plate in the same directionbut relatively to the spindle.

3. In an electric switch, the combination 'with a base and stationary contacts mounted thereon, and an oscillating spindle mounted therein, of an oscillating pole element loosely mounted on the spindle and including a switch plate adapted for frictional engageforming a driving connection between said spindle and pole element, a stop plate carried by the spindle and a stop lug carried by the pole element, said spindle being adapted for rotary motion in one direction relatively to said pole" element in order to store up power in said spring, said parts then moving together to disengage said switch late from said stationary contacts, said 'po e element then moving relatively with respect to said switch plate to break the circuit,'and means for causing said Spilldle and pole element to move together in the opposite direction.

MONROE GUETT. Witnesses: D. H. KIRKPATRICK, C. MoKnw PARK. 

